> For the complete documentation index, see [llms.txt](https://docs.velthoryn.site/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.velthoryn.site/architecture-decisions/decisions.md).

# Overview

This directory contains all Architecture Decision Records (ADRs) for the Velthoryn protocol. Each ADR documents a significant technical decision, its context, and consequences.

***

## Index

| ADR                                                                        | Decision                                                                               | Status   |
| -------------------------------------------------------------------------- | -------------------------------------------------------------------------------------- | -------- |
| [ADR-001](/architecture-decisions/adr-001-merkle-compressed-vesting.md)    | Use Merkle-compressed vesting (one tree per campaign, not one PDA per recipient)       | Accepted |
| [ADR-002](/architecture-decisions/adr-002-keccak-256-domain-separation.md) | Use Keccak-256 with domain separation for Merkle hashing                               | Accepted |
| [ADR-003](/architecture-decisions/adr-003-issue-29-per-leaf-ledger.md)     | Issue #29: per-leaf ledger in ClaimRecord (originally deferred, then shipped on-chain) | Accepted |
| [ADR-FE-001](/architecture-decisions/adr-fe-001-shadcn-ui.md)              | Adopt shadcn/ui as the component primitive layer                                       | Accepted |
| [ADR-FE-002](/architecture-decisions/adr-fe-002-e2e-mock-wallet.md)        | E2E mock wallet via localStorage flag                                                  | Accepted |
| [ADR-FE-003](/architecture-decisions/adr-fe-003-campaign-lifecycle.md)     | 8-state CampaignLifecycle enum                                                         | Accepted |
| [ADR-FE-004](/architecture-decisions/adr-fe-004-bankrun-ordering.md)       | Bankrun `warpToSlot` before `setClock`                                                 | Accepted |
| [ADR-FE-005](/architecture-decisions/adr-fe-005-server-side-tx.md)         | Server-side transaction building (tx-builder.ts)                                       | Accepted |
| [ADR-FE-006](/architecture-decisions/adr-fe-006-idl-drift.md)              | Manual claim instruction builder (IDL drift mitigation)                                | Accepted |
| [ADR-FE-007](/architecture-decisions/adr-fe-007-cancel-design.md)          | Cancel design: instant settle vs grace period                                          | Accepted |


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